Perhaps you should try some spelling variations:
communication model » communication media
case development » care development, based development, scale development
informal model » formal model, formal models, informal order
development en » developpement en, development menu, development eco
model does » model codes, model deep, model dom
model case » model based, model code, model can

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: technology from informal model does _ communication model case development en afrique.~.
• Adding a wildcard symbol may retrieve word variants: technology from informal model does _ communication model case development en afrique.*.